12 LIST OF ILLUSTRATIONS 



29. Enchanter's nightshade {Circaea Lutetiana) 59 



30. Bladder campion {^ilcne Ciiciibalus) 61 



31. Hobble-bush {Viburnum, lantanoides) 63 



32. Pipe-wort {Eriocaulon septangular e) 68 



33. Colic-root {Alctris jarinosa) 69 



34. Round-leaved sundew {Drosera rotundijolia) 71 



35. One-flowered pyrola (Moneses grandiflora) 73 



36. Twin-leaf {Jeffcrsonia diphylla) 74 



37. Pine sap {Monotropa Hypopitys) 75 



38. Great bumet {Potcrinm Canadcnse) 76 



39. White sweet clover {Melilotus alba) 77 



40. Yarrow (Achillea Millefolium) 80 



41. Chamomile {Anthemis Cotnla) 82 



42. Climbing false buckwheat {Polygomim, scandens) 83 



43. Wild lily-of-the-valley {Maianthem.um, Canadense) . ... 84 



44. Devils-bit {Chamaelirinni Carolinianutn) 85 



45. Leather-leaf (Cassaudra calyculata) 87 



46. Thorn-apple {Datura Stramonium) 87 



47. Cassiope hypnoides 89 



48. Water-pennywort {Hydrocotyle Americana) •. . 90 



49. Marsh andromeda {Andromeda polif alia) 93 



50. Labrador tea {Ledum, latifolium) 94 



51. Silver-rod {Solidago bicolor) 96 



52. Wild lettuce {Lactiica Canadensis) ■ • • • 96 



53. Common everlasting {Gnaplialium polycephalum) 96 



54. Bastard toad-flax {Comandra timbellata) 97 



55. Oswego tea {Monarda didyma) 107 



56. Hemp nettle {Galeopsis Tetrahit) 113 



57. Twin-flower {Linnaea borealis) 115 



58. Obedient-plant {Physostegia Virginiana) 117 



59. Spreading dogbane {Apocynum androsaemifolium) iiS 



60. Seaside gerardia {Gerardia maritima) 119 



61. Purple-leaved willow-herb {Epilobium coloratum) 120 



62. Joe Pye weed {Eupatorium purpureum) 122 



63. Tick-trefoil {Desmodium nudiflorunt) 127 



64. Rabbit-foot clover {Trifolium arvcnse) 129 



65. Arethusa {Arethusa bidbosa) 130 



66. Adder's mouth {Pogonia ophioglossoides) 131 



67. Blue vervain {Verbena hastata) 136 



68. Self-heal {Brunella vulgaris) 137 



